1.make sb./sth.do
sb/ sth 与do之间是主动关系,可构成主谓结构
eg.The teacher made him study hard.(he studies not the teacher)
make sb./sth.done
sb./sth.与do之间是被动关系,也可构成主谓结构
eg.The teacher made himself understood (by his students).老师使他自己被他学生所理解(he was understood )
2.any任何一个之意,该意可用于肯定句
3.be busy doing 固定词组,且表当时正在做,即使无busy,此处仍需用过去进行时